This is the coolest geologic find that I have seen in years:

[Subduction Zone]

https://news.berkeley.edu/2019/03/2...thbed-linked-to-dinosaur-killing-meteor/?T=AU

Except for the beads of tektites this would be what one would expect all "Flood" deposits to look like. One thin layer of all life in the region violently deposited. Instead it is the very rare deposit of a violent event.

 

[Polymath257]

I saw this a couple days ago and I completely agree. This seems to be a record of *the* event. And we can determine the time scale on which it happened! Love it, love it, love it.

 

[Subduction Zone]

https://news.berkeley.edu/2019/03/2...thbed-linked-to-dinosaur-killing-meteor/?T=AU

Except for the beads of tektites this would be what one would expect all "Flood" deposits to look like. One thin layer of all life in the region violently deposited. Instead it is the very rare deposit of a violent event.

Rats! The image I posted cannot be seen. Hit the reply button to the OP if you want to see an artist's rendering of the event.

 

[dybmh]

Rats! The image I posted cannot be seen.

 

[Shadow Wolf]

That is a fascinating find. And I can't help but feel there has to a dark joke to accompany it given they found it in America/South Dakota.

 

[Subduction Zone]

View attachment 28006

Thanks. I tried two different methods. I wonder if the server's memory for images is getting tight.

 

[Daemon Sophic]

I saw this a couple days ago and I completely agree. This seems to be a record of *the* event. And we can determine the time scale on which it happened! Love it, love it, love it.

Likewise.
The rain of glass beads was the coolest/scariest thing. It makes you consider the size and velocity of the impact, with continent-wide superheated sand cast into the stratosphere before raining down hundreds or thousands of miles away. Make nuclear weapons look like a jab from the foreleg of an ant.

Nerdgasm!​

 

[sayak83]

https://news.berkeley.edu/2019/03/2...thbed-linked-to-dinosaur-killing-meteor/?T=AU

Except for the beads of tektites this would be what one would expect all "Flood" deposits to look like. One thin layer of all life in the region violently deposited. Instead it is the very rare deposit of a violent event.

I am waiting till the papers come out.

 

[Subduction Zone]

I am waiting till the papers come out.

That can be a wise tack to take. That way you are not embarrassed by such things as Cold Fusion. Though this does not appear to be a case of that, it is only a very dramatic confirmation of information that was already known from multiple sources.

 

[Polymath257]

Likewise.
The rain of glass beads was the coolest/scariest thing. It makes you consider the size and velocity of the impact, with continent-wide superheated sand cast into the stratosphere before raining down hundreds or thousands of miles away. Make nuclear weapons look like a jab from the foreleg of an ant.

Nerdgasm!​

Well, asteroids would hit at orbital velocities: about 30 km/sec. And yes, this one *far* surpasses all the nukes humans have made.

One estimate I have seen for the impact energy is between 6*10^23 and 3*10^24 Joules.

The energy budget of human civilization is about 5*10^20 J/year. A one megaton nuke has an energy of about 4*10^15 J.

That means the impact had an energy that could power the whole Earth for 300 years and is equivalent to 150 *million* megatons of nukes.

/E: Remember, this was a *large* extinction event.

 

[sayak83]

That can be a wise tack to take. That way you are not embarrassed by such things as Cold Fusion. Though this does not appear to be a case of that, it is only a very dramatic confirmation of information that was already known from multiple sources.

The issue is whether the dating is correct etc.
Also, I am not a fan of publicity before the papers are actually published.
Anyways here is the full coverage,
New fossils may capture the minutes after the dinosaur-killing asteroid impact

 

[Kangaroo Feathers]

this be what "Flood" deposits to look like. One thin layer of all life in the region violently deposited. (How creationists see OP)

 

[Subduction Zone]

The issue is whether the dating is correct etc.
Also, I am not a fan of publicity before the papers are actually published.
Anyways here is the full coverage,
New fossils may capture the minutes after the dinosaur-killing asteroid impact

One thing that does appear to exist without much doubt are the tektites. And those are exceedingly rare. It could be shown to be a different event by dating, but I find that rather unlikely.

And I know that there still advocates of the Deccan Traps role in this extinction event. Studies in that are still are continuing:

Massive Volcanic Eruptions 66 Million Years Ago Happened Almost Exactly When the Dinosaurs Died Off - Universe Today

 

[Subduction Zone]

this be what "Flood" deposits to look like. One thin layer of all life in the region violently deposited. (How creationists see OP)

Quote mining is a wonderful thing. I respond with there is no God the Bible proves it, twelve different times the Bible says "there is no God".

 

[Polymath257]

One thing that does appear to exist without much doubt are the tektites. And those are exceedingly rare. It could be shown to be a different event by dating, but I find that rather unlikely.

And I know that there still advocates of the Deccan Traps role in this extinction event. Studies in that are still are continuing:

Massive Volcanic Eruptions 66 Million Years Ago Happened Almost Exactly When the Dinosaurs Died Off - Universe Today

My understanding is that current thought is that it was more of a one-two punch. Dino species are declining before the impact, in part because of the massive eruptions in the Deccan Traps. And then the asteroid hit, making a bad situation much worse.

One of the interesting points in the Dakota site is that it shows dinos were still around when this thing hit.

Also, there is a question of how much the asteroid hit affected the volcanic activity on the other side of the world. It was that big of a hit, after all.

 

[Polymath257]

The issue is whether the dating is correct etc.
Also, I am not a fan of publicity before the papers are actually published.
Anyways here is the full coverage,
New fossils may capture the minutes after the dinosaur-killing asteroid impact

And here is the published article: A seismically induced onshore surge deposit at the KPg boundary, North Dakota

I still have to read it and I would definitely like a geologists take on it. @Subduction Zone

 

[Polymath257]

The issue is whether the dating is correct etc.

From the article:

"Unaltered impact-melt glass exhibits a clear geochemical and geochronological link with the Chicxulub impact. A well-defined cap of iridium-bearing, fine-grained impactite tonstein directly overlying the deposit provides a well-constrained chronology—that is, after impact but before the finest ejecta settled—that can provide a detailed record of conditions shortly after the impact. The time frame indicated by the embedded ejecta and capping tonstein at Tanis overlaps with arrival times calculated for seismic waves generated by the Chicxulub impact, a peculiar coincidence that suggests the impact played a causative role in triggering the Tanis depositional event."

That seems like a pretty clear indication of the date. That Iridium layer is pretty definitive, from what I understand.

 

[Subduction Zone]

My understanding is that current thought is that it was more of a one-two punch. Dino species are declining before the impact, in part because of the massive eruptions in the Deccan Traps. And then the asteroid hit, making a bad situation much worse.

One of the interesting points in the Dakota site is that it shows dinos were still around when this thing hit.

Also, there is a question of how much the asteroid hit affected the volcanic activity on the other side of the world. It was that big of a hit, after all.

I agree. Now the Deccan Traps might have done the job themselves, but the sudden disappearance of all dinosaurs after the impact means that we will never know.

 

[Subduction Zone]

And here is the published article: A seismically induced onshore surge deposit at the KPg boundary, North Dakota

I still have to read it and I would definitely like a geologists take on it. @Subduction Zone

I am hardly a professional and have not kept up. There are others more qualified here.